RU2010125251A - METHOD AND DEVICE FOR SIGNAL PROCESSING - Google Patents

METHOD AND DEVICE FOR SIGNAL PROCESSING Download PDF

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RU2010125251A
RU2010125251A RU2010125251/08A RU2010125251A RU2010125251A RU 2010125251 A RU2010125251 A RU 2010125251A RU 2010125251/08 A RU2010125251/08 A RU 2010125251/08A RU 2010125251 A RU2010125251 A RU 2010125251A RU 2010125251 A RU2010125251 A RU 2010125251A
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signal
information
modification
encoding scheme
coding scheme
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RU2449387C2 (en
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Хиен-О ОХ (KR)
Хиен-О ОХ
Йанг Вон ДЗУНГ (KR)
Йанг Вон ДЗУНГ
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ЭлДжи ЭЛЕКТРОНИКС ИНК. (KR)
ЭлДжи ЭЛЕКТРОНИКС ИНК.
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    • H—ELECTRICITY
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G—PHYSICS
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    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
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    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234309—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
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    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/637—Control signals issued by the client directed to the server or network components
    • H04N21/6377—Control signals issued by the client directed to the server or network components directed to server
    • H—ELECTRICITY
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8106—Monomedia components thereof involving special audio data, e.g. different tracks for different languages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8126—Monomedia components thereof involving additional data, e.g. news, sports, stocks, weather forecasts
    • H04N21/8133—Monomedia components thereof involving additional data, e.g. news, sports, stocks, weather forecasts specifically related to the content, e.g. biography of the actors in a movie, detailed information about an article seen in a video program

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Abstract

1. Способ обработки сигнала, содержащий этапы, на которых: ! принимают, по меньшей мере, один из первого сигнала и второго сигнала; ! получают информацию режима и информацию флага модификации, указывающую, модифицирован ли первый сигнал; ! декодируют первый сигнал посредством схемы кодирования аудио, если информация режима указывает схему кодирования аудио; ! восстанавливают первый сигнал посредством применения информации восстановления после модификации к первому сигналу, если информация флага модификации указывает, что первый сигнал модифицирован; ! определяют базовый сигнал расширения, соответствующий частичной области первого сигнала, на основе информации расширения; и ! формируют расширенный сигнал понижающего микширования, имеющий расширенную полосу пропускания посредством восстановления сигнала области высоких частот с помощью базового сигнала расширения и информации расширения. ! 2. Способ по п.1, в котором схема кодирования аудио содержит схему кодирования в частотной области с использованием частотно-временного преобразования. ! 3. Способ по п.2, в котором схема кодирования аудио содержит восстановление первого сигнала во временную область, и в котором информация восстановления после модификации применяется к первому сигналу. ! 4. Способ по п.1, в котором информация флага модификации указывает, модифицирован ли первый сигнал во временной области. ! 5. Способ по п.1, в котором полоса пропускания сигнала области высоких частот не идентична полосе пропускания базового сигнала расширения. ! 6. Способ по п.1, в котором информация расширения содержит, по меньшей мере, одно из диапазона фильтра, применя� 1. A signal processing method, comprising the following steps: ! receive at least one of the first signal and the second signal; ! obtaining mode information and modification flag information indicating whether the first signal has been modified; ! decoding the first signal by an audio coding scheme if the mode information indicates an audio coding scheme; ! restoring the first signal by applying the modification recovery information to the first signal if the modification flag information indicates that the first signal has been modified; ! determining a base extension signal corresponding to a partial area of the first signal based on the extension information; and ! generating an extended downmix signal having an extended bandwidth by restoring the high frequency region signal with the base extension signal and the extension information. ! 2. The method of claim 1, wherein the audio coding scheme comprises a frequency domain coding scheme using a time-frequency transform. ! 3. The method of claim 2, wherein the audio coding scheme comprises restoring the first signal to the time domain, and wherein the modification recovery information is applied to the first signal. ! 4. The method of claim 1, wherein the modification flag information indicates whether the first signal has been modified in the time domain. ! 5. The method of claim 1, wherein the bandwidth of the high frequency region signal is not identical to the bandwidth of the base enhancement signal. ! 6. The method of claim 1, wherein the extension information comprises at least one of the filter range applied.

Claims (14)

1. Способ обработки сигнала, содержащий этапы, на которых:1. A signal processing method, comprising the steps of: принимают, по меньшей мере, один из первого сигнала и второго сигнала;receiving at least one of the first signal and the second signal; получают информацию режима и информацию флага модификации, указывающую, модифицирован ли первый сигнал;receiving mode information and modification flag information indicating whether the first signal is modified; декодируют первый сигнал посредством схемы кодирования аудио, если информация режима указывает схему кодирования аудио;decoding the first signal by an audio encoding scheme if the mode information indicates an audio encoding scheme; восстанавливают первый сигнал посредством применения информации восстановления после модификации к первому сигналу, если информация флага модификации указывает, что первый сигнал модифицирован;recovering the first signal by applying the post-modification recovery information to the first signal if the modification flag information indicates that the first signal is modified; определяют базовый сигнал расширения, соответствующий частичной области первого сигнала, на основе информации расширения; иdetermining a base extension signal corresponding to a partial region of the first signal based on the extension information; and формируют расширенный сигнал понижающего микширования, имеющий расширенную полосу пропускания посредством восстановления сигнала области высоких частот с помощью базового сигнала расширения и информации расширения.generating an extended downmix signal having an extended bandwidth by reconstructing the high frequency region signal with a base spreading signal and spreading information. 2. Способ по п.1, в котором схема кодирования аудио содержит схему кодирования в частотной области с использованием частотно-временного преобразования.2. The method of claim 1, wherein the audio coding scheme comprises a frequency domain coding scheme using a time-frequency conversion. 3. Способ по п.2, в котором схема кодирования аудио содержит восстановление первого сигнала во временную область, и в котором информация восстановления после модификации применяется к первому сигналу.3. The method according to claim 2, in which the audio coding scheme comprises restoring the first signal to the time domain, and in which the recovery information after modification is applied to the first signal. 4. Способ по п.1, в котором информация флага модификации указывает, модифицирован ли первый сигнал во временной области.4. The method of claim 1, wherein the modification flag information indicates whether the first signal is modified in the time domain. 5. Способ по п.1, в котором полоса пропускания сигнала области высоких частот не идентична полосе пропускания базового сигнала расширения.5. The method according to claim 1, in which the passband of the signal of the high frequency region is not identical to the passband of the base extension signal. 6. Способ по п.1, в котором информация расширения содержит, по меньшей мере, одно из диапазона фильтра, применяемого к сигналу понижающего микширования, начальной частоты базового сигнала расширения и конечной частоты базового сигнала расширения.6. The method of claim 1, wherein the extension information comprises at least one of a filter range applied to the downmix signal, an initial frequency of a base extension signal, and a final frequency of a base extension signal. 7. Способ по п.1, в котором информация восстановления после модификации содержит уровень регулирования значения усиления первого сигнала.7. The method according to claim 1, in which the information recovery after modification contains the level of regulation of the gain value of the first signal. 8. Способ по п.7, в котором значение усиления определяется на основе коэффициента области линейного прогнозирования.8. The method according to claim 7, in which the gain value is determined based on the coefficient of the region of linear forecasting. 9. Устройство для обработки сигнала, содержащее:9. A device for processing a signal, comprising: приемный модуль, принимающий, по меньшей мере, один из первого сигнала и второго сигнала;a receiving module receiving at least one of a first signal and a second signal; модуль получения информации, получающий информацию режима для определения схемы кодирования и информацию флага модификации, указывающую, модифицирован ли первый сигнал;an information acquiring module acquiring mode information for determining a coding scheme and modification flag information indicating whether the first signal is modified; модуль декодирования для схемы кодирования аудио, декодирующий первый сигнал посредством схемы кодирования аудио, если информация режима указывает схему кодирования аудио;a decoding module for an audio encoding scheme decoding a first signal by an audio encoding scheme if the mode information indicates an audio encoding scheme; модуль модификации первого сигнала, модифицирующий первый сигнал посредством применения информации восстановления после модификации к первому сигналу, если информация флага модификации указывает, что первый сигнал модифицирован;a first signal modification module modifying the first signal by applying the post-modification recovery information to the first signal if the modification flag information indicates that the first signal is modified; модуль определения базовой области расширения, определяющий базовый сигнал расширения в сигнале понижающего микширования на основе информации расширения; иa base extension region determining unit determining a base extension signal in a downmix signal based on the extension information; and модуль восстановления сигнала области высоких частот, формирующий расширенный сигнал понижающего микширования, имеющий полосу пропускания, расширенную посредством восстановления сигнала области высоких частот с помощью базового сигнала расширения и информации расширения.a high-frequency region signal recovery module generating an extended down-mix signal having a bandwidth expanded by reconstructing a high-frequency region signal using a base extension signal and extension information. 10. Устройство по п.9, в котором схема кодирования аудио содержит схему кодирования в частотной области с использованием частотно-временного преобразования.10. The device according to claim 9, in which the audio coding scheme comprises a frequency domain coding scheme using a time-frequency conversion. 11. Устройство по п.9, в котором модуль декодирования для схемы кодирования аудио содержит модуль восстановления во временной области, восстанавливающий первый сигнал во временную область.11. The device according to claim 9, in which the decoding module for the audio encoding scheme comprises a time-domain reconstruction module that restores the first signal to the time-domain. 12. Устройство по п.9, в котором модуль модификации первого сигнала применяет информацию восстановления после модификации к первому сигналу, введенному из модуля восстановления во временной области.12. The device according to claim 9, in which the modification module of the first signal applies the recovery information after modification to the first signal input from the recovery module in the time domain. 13. Устройство по п.9, в котором модуль определения базовой области расширения определяет сигнал, находящийся в частичной области частот в сигнале понижающего микширования, в качестве базового сигнала расширения.13. The device according to claim 9, in which the module for determining the base region of expansion determines the signal located in the partial frequency region in the down-mix signal, as the base signal of expansion. 14. Способ обработки аудиосигнала, содержащий этапы, на которых:14. A method for processing an audio signal, comprising the steps of: определяют схему кодирования входного сигнала как схему кодирования аудио или схему кодирования речи;determining an encoding scheme of the input signal as an audio encoding scheme or a speech encoding scheme; формируют информацию режима, указывающую схему кодирования аудио, если схема кодирования определена как схема кодирования аудио;generating mode information indicating an audio encoding scheme if the encoding scheme is defined as an audio encoding scheme; модифицируют входной сигнал и формируют информацию восстановления после модификации на основе информации, используемой для модификации; иmodifying the input signal and generating recovery information after the modification based on the information used for the modification; and кодируют входной сигнал и информацию восстановления после модификации посредством схемы кодирования аудио,encode the input signal and the information of the recovery after modification by means of an audio encoding scheme, при этом входной сигнал содержит, по меньшей мере, один из первого сигнала, использующего схему кодирования аудио, и второго сигнала, использующего схему кодирования речи. wherein the input signal comprises at least one of a first signal using an audio coding scheme and a second signal using a speech coding scheme.
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